Amazon.com: Dual-Ear Corded Office Call Center Headset with Noise-Canceling Microphone, 4-Pin RJ9 Quick Disconnect Cord for use with Most Analog Desk Phones Like Avaya, Nortel, ShoreTel, Polycom, and Cisco : Electronics
JABRA B2300 QD: Contact Center Headset, stereo at reichelt elektronik
Commander-PM V2 | Professional Office & Contact Centre Headset